This type of
tester is used to measure and analyze the electric property
of the on-load tap-changer of power transformer. It can
measure the parameters automatically. The parameters include
the transient time, the transient waveform, the transition
resistor, the characteristic of three phrases synchronous,
the preferential of the angle of departure and the time
of switching occurs. It also has the advantages of the
large screen liquid crystal display and the power-off
protection. It is equipped with RS232 microcomputer interface
which is useful for the microcomputer analyzing and managing
automatically of the testing results.